Improper locking in Linux kernel hw hfi1 driver

1) Improper locking

EUVDB-ID: #VU92053

Risk: Low

CVSSv3.1: 6.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-52474

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to improper locking within the build_vnic_ulp_payload() function in drivers/infiniband/hw/hfi1/vnic_sdma.c, within the build_verbs_tx_desc() function in drivers/infiniband/hw/hfi1/verbs.c, within the user_sdma_send_pkts(), add_system_pages_to_sdma_packet(), hfi1_user_sdma_process_request(), user_sdma_txadd_ahg(), sdma_cache_evict(), user_sdma_txreq_cb(), pq_update(), user_sdma_free_request(), set_comp_state() and sdma_rb_remove() functions in drivers/infiniband/hw/hfi1/user_sdma.c, within the sdma_unmap_desc(), ext_coal_sdma_tx_descs() and _pad_sdma_tx_descs() functions in drivers/infiniband/hw/hfi1/sdma.c, within the hfi1_mmu_rb_insert(), hfi1_mmu_rb_get_first(), __mmu_rb_search() and hfi1_mmu_rb_evict() functions in drivers/infiniband/hw/hfi1/mmu_rb.c, within the hfi1_ipoib_build_ulp_payload() function in drivers/infiniband/hw/hfi1/ipoib_tx.c. A local user can execute arbitrary code.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

http://git.kernel.org/stable/c/9c4c6512d7330b743c4ffd18bd999a86ca26db0d
http://git.kernel.org/stable/c/a2bd706ab63509793b5cd5065e685b7ef5cba678
http://git.kernel.org/stable/c/dce59b5443700fbd0d2433ec6e4d4cf063448844
http://git.kernel.org/stable/c/c76cb8f4bdf26d04cfa5485a93ce297dba5e6a80
http://git.kernel.org/stable/c/7e6010f79b58f45b204cf18aa58f4b73c3f30adc
http://git.kernel.org/stable/c/00cbce5cbf88459cd1aa1d60d0f1df15477df127

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.